Sam Wants to Perform a Goodness-Of-Fit Test for a Poisson

Multiple Choice

Sam wants to perform a goodness-of-fit test for a Poisson distribution using the following sample data on the frequency of arrivals per minute. What value should Sam use to estimate the required parameter (?) ? $$\begin{array} { | c | c | } \hline \boldsymbol { x } & \boldsymbol { f } \\\hline 0 & 3 \\\hline 1 & 9 \\\hline 2 & 14 \\\hline 3 & 11 \\\hline 4 & 7 \\\hline 5 & 4 \\\hline 6 & 2 \\\hline \text { Total } & 50 \\\hline\end{array}$$

A) 1.9
B) 2.1
C) 2.6
D) 3.1